IF N18

Moisture Insensitive Primer


IF N18 is a two component, for use with Epoxy Modified Cementitious Floor Screed and Heavy Duty Epoxy Floor Screed. IF N18 provides good penetrating properties for porous substrates like concrete, sand / cement screed etc. normally minimum of two coats is recommended. Where surfaces are very porous, more than two coat of primer may be required to achieve the desired bonding efficiency.

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Good adhesion of epoxy/Polyurethane floor toppings & with the cementitious substrate
Can be applied on damp concrete surface
Easy to apply
Seal the substrate


The concrete or screed substrate must be hard, sound and free of dust and other barrier materials such as paint, lime coatings, plaster, curing agents, laitance, adhesive residues etc., that will inhibit adhesion to the substrate.

Use a suitable Degreaser to remove polish, wax, grease, oil and similar contaminating substances prior to mechanical preparation. Contaminated concrete surfaces should be mechanically prepared, either by scabbling, grinding or contained shot blasting equipment or similar, and be vacuumed clean prior to applying IF N18. Overwatered or otherwise weak concrete surfaces must also be suitably prepared down to sound, solid concrete by mechanical methods. Dust and other debris should be removed using vacuum equipment.

NOTE : Any joints or cracks in the concrete base where differential movement is anticipated e.g. movement joints, should be brought through to the finished surface and suitably sealed. New concrete slabs must be allowed to cure for at least 14 days.


All areas to be treated with RIF PUSL 10 Dmust first be primed with CLI N18Solvent Free Epoxy Primer. One or more coats of primer may be required depending upon the condition and porosity of the concrete substrate. High porosity substrates may be revealed after preparation and will be evident by their rapid suction and absorption. If in doubt use two coats of CLI N18 Solvent Free Epoxy Primer. Poorly primed surfaces may lead to blistering or pin holing in the cured resin.


The individual contents of the IF N18 should be thoroughly stirred before being mixed together. The entire contents of Part B and Part A should be poured into the larger mixing vessel and two materials are mixed thoroughly for at least 3 minutes using a heavy duty slow speed spiral paddle drill. Some of the mixed components should be reintroduced back into the hardener container in order to activate any residue and then poured back into the larger mixing vessel and re-mixed for 30 seconds. Mixing in this way will ensure product consistency and that any resin that remains in the containers after application will cure to provide for easier waste disposal.


Once mixed, the material should be spread over the prepared floor as self-heating in the container will reduce working time. Apply using a brush or short / medium pile roller. Two or more coats may be needed to ensure that a uniform coating is achieved and to compensate for differences in surface porosity.

All movement joints in the sub-floor must be carried through the topping and properly sealed. Construction joints and cracks not subject to movement may be overlaid but should the floor move in anyway, these defects will reflect through the system. Isolation joints will need to be allowed for in areas where high thermal movement is anticipated, e.g. around ovens and freezers.


IF N18 can be removed from tools and equipment by using CLI Eco Sol 205 immediately after use. Any hardened material will need to be removed mechanically.


The values shown are typical of results obtained in the laboratory at 27 ± 1ºC. Actual performance values obtained on site may vary from those quoted.


Working time

35 mins

Re-coat time

10 - 12 hours

Bond strength to concrete

> 2.0 N/mm2

IF 4 E should be allowed to cure prior to the installation of the final floor finish, typically 24 hours at 27 ± 1 degree C.


Pack size




Part A 1.5kg
Part B 1kg

15 m² per coat

NOTE : These figures are theoretical, due to the wastages and the variety and nature of substrates practical coverage figures may be reduced.


IF N18 has a shelf life of 12 months if kept in dry condition between 5 degree C and 30 degree C in the original unopened containers. The product should be protected from frost, away from direct sunlight and sources of heat.


The hardener which contains phenalkamine and the epoxy resin which contains bisphenol A/F epichlorhydrin, can be irritating to the eyes and skin, and may cause sensitisation by contact. They are considered harmful in contact with the skin and if swallowed. During mixing and application the following precautions should be observed: ensure adequate ventilation and avoid contact of the material with the eyes, nasal passages, mouth and unprotected skin.

Avoid contact with the hands by wearing protective gloves and by using, if necessary, a suitable barrier cream. In case of contact with the eyes, rinse immediately with plenty of water and seek medical advice and after contact with the skin wash immediately with plenty of soap and water (do not use solvents). Prolonged contact with the skin should be avoided, especially where the user has an allergic reaction to epoxide materials. Always wear gloves and eye/face protection as necessary. Observe personal hygiene, particularly washing the hands after work has been completed or at any interruption whilst work is in progress. Care should be taken when removing gloves to avoid contaminating the insides. In case of accidents seek medical advice.


Spillage of any of the component products should be absorbed onto sand or other inert material and transferred to a suitable disposable vessel. Disposal of such spillage or empty packaging should be in accordance with local waste disposal authority regulations.


Sold subject to the Company's conditions of sale which are available on request.


The information supplied in this datasheet is based upon extensive experience and is given in good faith in order to help you. Our Company policy is one of continuous Research and Development; we therefore reserve the right to update this information at any time without prior notice. We also guarantee the consistent high quality of our products; however as we have no control over site conditions or the execution of the work, we accept no liability for any loss or damage which may arise as a result thereof.